I've been treating our hen and chicks with permethrin dust, like @Lady of McCamley suggested, and it's been working well. They have fewer lice now, and seem happier. The only thing I would be careful about is that the chicks don't chill, because they're pretty tiny at that age. Good luck, and...
My two-week old baby chicks have been scratching a lot, and I noticed a bug crawling on one of them. I looked closer and found it was a louse. I'm pretty sure they're all infected. They hatched under a broody hen, and she obviously spread it to them. Is there anything I can do? I've read that...